Re: EFI-dualbooting OSX and Linux on iMac with T7400-CPU

["bibo,mao" <bibo.mao@intel.com>]

Eeri Kask wrote:
> Yoshinori K. Okuji wrote:
>  >> (line 2-2)
>  >> syntax error
>  >> Incorrect command
>  >> ...
>  >> (line 12-12)
>  >> Press any key to continue...
>  >
>  > Hmm.. I think you need to put the open braces in the same line as "menuentry"
>  > commands.
> 
> Thank you for the hint!  :-)
> 
> So now my grub.cfg looks
> 
> menuentry "MacOSX" {
>   set root=(hd0,2)
>   chainloader /System/Library/CoreServices/boot.efi
> }
> 
> menuentry "GNU/Linux" {
>   set root=(hd0,5)
>   linux /boot/vmlinuz root=/dev/sda5
> }
> 
> and grub shows text-mode menu similar to the old version "0.97".

> 
> I think grub is working perfectly well since I can boot MacOSX as one
> would expect it to do (my supposition about eventually not reading HFS+
> journaled filesystems luckily proved to be false).
> 
> Then, selecting 'GNU/Linux' shows
> 
>     Booting 'GNU/Linux'
> 
>     [Linux-EFI, setup=0x1e00, size=0x231796]
> 
There is no initrd option in your menu, I do not know whether it can
successfully boot up without initrd option with grub2. you can enter
into rescue mode(command-line mode), and enter commands like this:
$linux /boot/vmlinuz root=/dev/sda5
$initrd /boot/xxx
$boot

And what is your linux kernel version?

> 
> and from now on nothing appears to the screen.  Shortly thereafter I
> notice USB-keyboard LEDs blinking on-off (num-lock, caps-lock,
> scroll-lock) at some time point, so maybe Linux is in the middle of
> booting I simply cannot visually observe.  Assuming booting is in
> progress, at some stage it fails though; otherwise I should have remote
> ssh-access if it had finished properly, staying in some unusable video
> state.
> So as you described, graphics drivers need to be investigated and patched.
> 
> 
>  > BTW, this report seems to be a proof that x86_64 starts up in 32-bit mode even
>  > on EFI, well, in Intel Mac. So do we really need to implement 64-bit support
>  > for x86_64?
> 
> As said, I was able to boot MacOSX 10.4.8 without any trouble on iMac
> intel T7400-cpu only using current grub2 from cvs  (i.e. without
> bootcamp, without refit, etc. etc.).
> Though, after finishing installation, without asking me MacOSX over the
> network automatically updated firmware, hopefully to the current latest
> version.
> 
> Greetings,
> 
>     Eeri Kask
> 
> 
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